how to fill the data in the missing value

[Namba Takaya <takayanamba@xxxxxxxxxxx>]

Dear Sir

I have a netcdf data like bellow. 
bash-2.05b$ ncdump -h upstr1.nc
netcdf upstr1 {
dimensions:
        LON91_110 = 20 ;
        LAT91_110 = 20 ;
        TT = 12 ;
variables:
        double LON91_110(LON91_110) ;
                LON91_110:units = "degrees_east" ;
                LON91_110:modulo = " " ;
                LON91_110:point_spacing = "even" ;
        double LAT91_110(LAT91_110) ;
                LAT91_110:units = "degrees_north" ;
                LAT91_110:point_spacing = "even" ;
        double TT(TT) ;
                TT:units = "DAY since 0000-01-01 00:00:00" ;
                TT:time_origin = "01-JAN-0000" ;
        float UPSTRR(TT, LAT91_110, LON91_110) ;
                UPSTRR:missing_value = -1.e+034f ;
                UPSTRR:_FillValue = -1.e+034f ;
                UPSTRR:long_name = "UPSTR37_CLIM[G=XXYYTT]" ;
                UPSTRR:history = "From upstr.mean.nc" ;

(in ferret)
yes? use upstr1.nc
yes? show data
     currently SET data sets:
    1> .\upstr1.nc  (default)
 name     title                             I         J         K         L
 UPSTRR   UPSTR37_CLIM[G=XXYYTT]           1:20      1:20      ...       
1:12

There are some missing values of UPSTRR.
I would like to fill(interpolate) the values in stead of missing values and 
I would like to make none of missing values in UPSTRR.

Of course, it depends on how to interpolate.
For exmaple, it is possible that I do "at first time(T) interpolation then 
next X and Y spacial interpolation" or "X and Y spacial interpolation then 
time interpolation".

Then is it possible to fill the values in the all missing valuses to sweep 
out the missing value?

Could somebody tell me how?

Best Regards

Takaya Namba











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